Re: annoying brute force attack attempt using ssh

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Today Łukasz Jagiełło did spake thusly:

2008/5/15 Scott van Looy <scott@xxxxxxxxxxx>:
May 15 12:04:00 novak sshd[21433]: Connection from 193.239.125.119 port
54204
May 15 12:04:01 novak sshd[21433]: Invalid user style from 193.239.125.119
May 15 12:04:01 novak sshd[21434]: input_userauth_request: invalid user
style
May 15 12:04:03 novak sshd[21433]: Failed password for invalid user style
from 193.239.125.119 port 54204 ssh2
May 15 12:04:03 novak sshd[21434]: Received disconnect from 193.239.125.119:
11: Bye Bye


Lots and lots. Around 1 every 5 seconds.

So I ran
iptables -A INPUT -s 193.239.125.119 -j DROP
and was surprised to see them attacks continue
Ran iptables -L just to make sure my rule was there and it was
in the end had to use hosts.deny to block the IP

Anyone got any ideas why?

What about policy at INPUT ?

REJECT all -- anywhere anywhere reject-with icmp-host-prohibited

It's the standard firewall created with system-config-firewall

Incidentally, how on earth do I add custom rules to system-config-firewall? I add them manually, save them, check /etc/sysconfig/iptables and they're listed, run system-config-firewall and they're not included. And I have no idea what to put in the Custom rules box. And I can't find any docs anywhere!

--
Scott van Looy - email:me@xxxxxxxxxxxxxx | web:www.ethosuk.org.uk
site:www.freakcity.net - the in place for outcasts since 2003
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